Thanks to Nikon Watch for flagging up this article on the Amateur Photographer site which suggests that Leica is planning to launch a "full-frame 35mm sensor-based digital rangefinder camera", possibly even in time for PMA this fall. Remarkably, it might even be available as an update package for the M8, although judging by the €1200 price tag of their current update package you might need deep pockets. Still, if you have an M8 you probably already have deep pockets.